Decadent Peanut Butter Brownie Cupcakes Recipe

Peanut Butter Brownie Cupcakes are fudge brownie cupcakes finished with a silky peanut butter sauce and a glossy chocolate glaze. Pure indulgence.

I made a batch of these Peanut Butter Brownie Cupcakes to kick off a gathering, and they were an instant hit. Chocolate and peanut butter are a classic pairing, and here the fudgy brownie base, caramel-like peanut butter topping and shiny chocolate finish come together beautifully.

Imagine dense, fudgy brownie cupcakes, each topped with a warm peanut butter glaze and finished with a milk chocolate drizzle and a scattering of chopped peanuts. Every bite is rich and satisfying.

Below you’ll find the ingredient list and clear instructions so you can make these at home for friends and family.

Why You’ll Love Peanut Chocolate Brownie Cupcakes

• Simple to prepare with store-bought brownie mix
• Decadent, crowd-pleasing dessert
• Perfect for chocolate and peanut butter lovers
• Great with kids and for parties
• Customizable with different toppings or chocolates

Ingredients

Brownie Cupcakes

• 1 package brownie mix (18 oz / 440 g)
• 2 large eggs
• 1/3 cup water
• 1/4 cup vegetable oil

Peanut Butter Topping

• 1/3 cup sugar
• 1/3 cup light corn syrup
• 1/2 cup smooth peanut butter

Chocolate Topping

• 3/4 cup semi-sweet chocolate chips
• 3 tbsp salted butter
• 1 tbsp light corn syrup
• Chopped peanuts, for garnish (optional)

How to Make Peanut Butter Brownie Cupcakes

• Step One: Preheat the oven to 350°F (175°C). Line a 12-cup muffin tin with cupcake liners.
• Step Two: In a large bowl, combine the brownie mix, eggs, water and vegetable oil. Stir until just combined. Fill each liner almost full and bake for about 30 minutes, or until a toothpick inserted in the center comes out clean. Remove from the oven and cool completely.
• Step Three: For the peanut butter topping, place the sugar and corn syrup in a small saucepan over medium heat. Bring to a gentle boil, then remove from heat and stir in the peanut butter until smooth. Drop about 1 teaspoon of the peanut butter mixture onto each cooled cupcake. Allow to set.
• Step Four: Make the chocolate topping by warming the chocolate chips, butter and corn syrup in a small saucepan over low heat, stirring constantly until fully melted and glossy. Remove from heat and spoon about 1/2 to 1 teaspoon over each peanut butter-topped cupcake. Sprinkle with chopped peanuts if desired. Let the chocolate set before serving.

Equipment Needed

• Saucepan
• Mixing bowl
• Muffin pan

What to Serve With Peanut Butter Brownie Cupcakes

• Fresh berries or a simple berry compote
• Vanilla ice cream or whipped cream
• Other small baked treats for a dessert spread

Variations and Substitutions

• Omit the peanuts or use a different chopped nut for garnish.
• Swap the peanut butter topping for butterscotch or a nut-free caramel if needed.
• Add a mini chocolate peanut cup or candy on top for an extra touch.
• Use white chocolate or dark chocolate chips for the glaze, depending on preference.

Storage Instructions

Store decorated cupcakes in an airtight container at room temperature for up to 3 days. For longer storage, refrigerate in an airtight container for 5–6 days.

Can I Freeze?

Yes. Freeze the cupcakes in a freezer-safe container for up to 3 months. Thaw in the refrigerator before serving.

More Chocolate Cupcake Ideas

• Banana chocolate chip cupcakes with peanut butter frosting
• Death by chocolate cupcakes
• Chocolate peanut butter cupcakes
• S’mores overload cupcakes
• Reese’s peanut butter cupcakes
• Oreo cupcakes

You might also enjoy peanut butter cheesecake brownies, salted caramel brownies, or brownie cheesecake cups as other chocolate-forward options.

If you try this recipe, share your results on social media and tag the creator to show how it turned out.